AirHint found the following cheapest return flights from London (LTN) to New York (JFK) in September 2025 (see full year).

Return flights

09 Sep - 19 Sep	Ryanair
11 Sep - 14 Sep	Ryanair
04 Sep - 07 Sep	Ryanair
18 Sep - 22 Sep	Ryanair
04 Sep - 08 Sep	Ryanair
03 Sep - 08 Sep	easyJet
23 Sep - 23 Oct	Wizz Air UK
23 Sep - 08 Oct	Wizz Air UK
10 Sep - 12 Sep	easyJet
10 Sep - 16 Sep	easyJet
25 Sep - 01 Oct	easyJet
07 Sep - 14 Sep	Ryanair
10 Sep - 23 Sep	easyJet
16 Sep - 20 Oct	Wizz Air UK
17 Sep - 05 Oct	easyJet
23 Sep - 03 Oct	Wizz Air UK
09 Sep - 12 Oct	Wizz Air UK
29 Sep - 09 Oct	Ryanair
17 Sep - 01 Oct	easyJet
30 Sep - 15 Oct	easyJet

Also check the deals for one-way flights from London to New York in September.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from London to New York in September from 388€

Return flights